Weighing apparatus



L. A. OSGOOD..

WEIGHING APPARATUS. Avucmon man JUNE 26. 191s.

Patented Jan. 3, 1922.

2 SHEETS-SHEET l .n Il

L. A. OSGOOD.

WEIGHING APPARATUS.

APPucATlon man :uur 2e, 1915.

Patented Jan. 3, 1922.

2 SHEETS-SHEET 2.

. Yuncgf UNITED STATES PATENT OFFICE.

1 MUIS. ASHLEY OSGOOD', .OF CHICAGO, ILLINOIS, ASSIGNORTO AMERICAN AUTOMATIC SCALECQM'AJW. Ol CHICAGO, ILLINOIS, A CORPOR-ATION 0F ILLINOIS.

WEIGHING ArrARATUs.

To @Mw /tom t may concer/1i Beit known that i, Louis AsHLiiY Oseoon,

a citizen et the United States, and a residenV` Y of Chicago, in the county of Cook, State of Illinois, 'have invented certain new and useful Improvements in lVeighing Apparatus, of which the following is a specilication, reference beingliad to the accompanying drawthe objects 'of my invention to provide a 'new Aand vimproved form and arrangement of parts by which a maximum ofsensitiveness Y maybe secured' in the 'movement of theindieating means. It isanother object of my invention to provide an apparatus of the type described involving a new and improved "arrangement of the oppositelyswinging weighted arms or pendulums relative to the beam to' which they are connected. .It is .another objectof my invention to provide an'arrangement in an apparatus of this type by reason owhich one of the weighted arms or pendulums `is adapted to exert an upward lpull upon the beam while the cooperating weighted arm or pendulum rexerts a downwardpull, the cooperating weighted arms or pendulums being adapted thus to substantially offset each otherso far as their Vdead weight is concerned while at the same time being adapted to cooperate in their eiective-operation upon the beam. It is another objec't of my invention to provide a newand improved arrangement of connections. between the beam and 'the revolubly mounted hand by which the weight is indicated. :It is another object of my invention to provide a new and improved arrangement of. vmechanism 'for applying a doubling weightto thebeam. It is another object of my invention `to simplify and cheapen the construction and arrangement as far as possible, andto improve apparatus ofthis general typein sundry details hereinafter pointed out. The preferred means by which I have accomplished in v several objects are 'illustrated in the drawings and are herein- 'after specifically described. That which I believe to be new and desire to cover by this :application is set forth in the claims.

In the drawings Specification of Letters Patent.

.mentary view Y Patented J an. 3,1922.

Application filed June 26, 1916. Seria1"No..105,93.

`Fig. 1-is ariciont'view oiI a weighing apparatus embodying my improvements;

TFig. 2 is a central vertical Ysection `taken.

Yshownv in. Fig. 4, partly in section, taken on line 5`5 otFiggel.;

Fig. '6 is a very much enlarged detail illustrating the y'means for mounting the rack-bar by which theindicating hand is actuated, being partly in section taken upon the line Fig. 7 is an enlarged detail illustratingthe arrangement of parts at the point where the rack-bar engages the pinion mounted upon the spindle of the indicating hand.

Referring to 'theseveral figures of the drawings in lwhich corresponding parts are indicated by the samereference characters,-

15 indicates the framework of my improved apparatus, comprising a. casing p0rtion 16 adapted to serve as a housing for the weigh-beam and connected parts, and a drum portion 17 adapted to contain the weight-indicating means. A weigh-beam 18 is pivotally Vmounted upon standards 19-20 rising from the bottom of the casing 1G, having connected toit 4means for supporting to be weighed comprising 'a link 21 adaptedfto be equipped with any ap- Aproved type of platform Ior pan. A balancing weight '22 (see'Fig. 3) is adjiistably mounted upon the beamH 18 by means of a screw y23y by which the weight can be 4adjusted finely relative to the beam, an

opening 24 being provided in the casing 16 for access to such screw 23. vA stop device 25 of any suitable type is provided ttor limiting` the swinging of the beam 18.

A tare-beam '26 is mounted to swing with the beam i18, being connected with the beam 18 by any suitable means extending through an opening 27 in the front face of the casing 16. The tare-beam 26 is provided with a suitable weight 28 adjustable therealong.

An arm or pendulum 29 'carrying a weight 30 at its lowerv end iS xedly mounted upon weight a short distance at one side of the pivots upon which the beam 18 is mounted.

A second armrl carrying a weight 32 is pivotally mounted upon a bracket 83j eX-V 'tending from the inner face of the drumV 17. The arm 31 has integrally formed with is located.A The proportions of the weightsy it Va horizontally-extending arm 84 which isy pivotally connected by means .of a train of links 35 with the beamV 18 at the side of the axis upon which the beam 18 is mounted opposite to that upon which the weight 30 30-32 and their-connections with the beam 18 are such that as the beamr18 is swung upon its pivots the effect of one of such weights in resisting the swinging movement exerts a like movement in the same direction as does weight 32; the twov weights being thus in effect addedtogether in opposing V.the movement of the beam by the weight'of the goods on the scale-parier platform, not shown.

By reason of having the/weight Y82 mounted so as to exert an upward pull upon the vbeam 18 when resisting the swinging of the beam in the direction to increase the weight indication as hereinafter described, and having the weight 30 mounted so as to exert a downward pullIV upon the beam, the dead weight of the weightBQ is substantially offset by that of the weight 32whereby the friction of the beam 18 upon the knife edges bv Vwhich it is sunportd upon the standards 1920 is greatly reduced. -By reason of having the weight 30 ina comparatively low position.A the stability7 of the apparatus as a whole is greatly increased as compared to a `'constructionin which both of the weighted arms or pendulums are located above the beam.

weight 86. for increasing the capacity of the scale, is movably mounted opposite the end of'the beam 18..` This capacity weight, is supported in position by means of a rock-shaft 37 revolubly mounted upon a bracket 38 supported by the casing 16. vThe arms 39-40 are fixed on said rock-shaft and are provided with pins 41-42, respectively, yengaging suitable grooves in the underside of a head 43connected by means of an offset neck portion 44 with the body of the weight 36.` The shaft137'extends through the wall of the :casing 16'being provided with a handle or arm 45 carrying at its outer end -a ,weight 4 6 which' assists in holding the 1we1ght 36. 1n inoperative position with the centers of the pins 414-42 swung past the center of thev shaft 37,* as shown in Fig. 4.

' ldllllel ther'arm 45 iSSWuIlgl lin counter-clock.

wise direction in Fig. 1 the weight 36 is moved to the left inFigs. 1 and 4- bringing the sockets or grooves 47 ofgthe weight 36 into position upon the-knife-48 carried by the beam18; the arms 89-40 carrying the pins 41-42 out of the recesses or grooves in the head 43 and having the weight 36 suspended on the said knife'48. "When the arms 39-40 are swung back to normal position'by means of. the arm 45 the pins pick up the head 43 Vagain and so carry the weight 36 back to its inFigs. 1 and 4. l

The proportions of the parts are such .that when the weight y36 is in position upon the beam 18 an initial weight of 500pounds is required 'upon the weight supporting means before the beam 18 will be swung -upon its pivots. Whenever in a weighing operation the beam 18 is given a/,swinging movement (counterclockwise in Fig. 1) with the weight 36 mounted on the beam, it will be understood that the weight by'which the` beam .is being actuated is equalV to the weight indicated by the'indicating hand asl hereinafter described, plus'500 pounds. For Y indicating the 500 pounds which must vbe, added to the weight indicationy of the hand,`

there is provided a counter 49 pivotally mounted upon an arm 50 mounted upon 'the drum 17, the counter being-connected with,

.the rock-shaft 37 throughv the medium of a link 51 which isrconn'ected by means of a -link 52 to a pin 53 carried by the arm 40.

Vhenever'the rock-shaft 37 is rotated forf depositing the weight 36 upon thefbeam 18 home position, shown the counter 49 is moveddownw'ard to bring Y the number thereon into position to show through an opening 54 in the dial 55 car-V ried by the `drum 17.

Themeans for indicating the weight of goods (carried by the beam 18 through the llink 21) independently of the weight indithe rack-bar 59, being held in adjusted position thereon by-means of a set-screw 62. By

the manipulation of the *weight 61 in connection with a proper longitudinal adjustment of the Vrack-bar 59, the rack-bar 59'can be verv nicely balanced in position.

The rack-bar 59 meshes at its free' end with a pinion 68 (Fig. 7) fixed uponthe spindle 64 which carries the indicating hand 65 vwhich is adapted to revolve in front of the dial 55, as is shown in Fig. 2. The forward end of the spindle 64 is supported in positionj by means of al suitable bearing carried by a plate 66 which is supported by means of a lug 67 (see Fig. 1) from @Ting 68carried by thedial 55. I-he'v rea-r end ofthe spindle 64 is supported ley-means -ofaesuitableV bearing carried b` f aheadGQ-supported byarnis -71 (see rig.' 1)-extending inward ronifthe ring 68. The meshing-ofthe rack-bar 59 with the pinion `G3 is controlled by a notched bracket 72 which-is supported by the arm 70. As is best shown in Fig. 7, the rack-bar 59 located below the pinion 655 and is adapted to `nieshvery lightly with such pinionby reasonof the nice balancing ot the rack-bai'. The notched bracket 72 is adapted to be adjusted-relative to the arm T() so as to insure the rack-bar 59 bein maintained constantly in mesh with the pinion G8 but so as to permit the engagement to be exceedingly free. f

A weight 78 is mounted upon the beam 18 in adjustable position thereon for bringing the apparatus approximately into balance, the weight 22 being adapted for the finer balancing adjustments. By reason of the relative positions of the weights 30 and 32 so `that one of the weights exerts an upward pull upon the beam 18, a comparatively light weight 73 suiices lor bringing the scale into balance without the necessity for Weighting the beam 18 heavily'andV thus unnecessarily increasing the friction in the knife-edge bearing of the beam.

What I claim as my invention and desire to secure by Letters Patent, is- Y 1. In a weighing apparatus, the combination of a pivoted weigh-beam, means Jfor supporting an article to be weighed from said beam, means actuated by the swinging of said beam upon its pivotal mounting for indicating the weight, a rock-shaft a short distance above said beam, arms carried by said rock-shat, a. capacity weight pivotally mounted on said arms, and means for turning the rock-shaft for depositing the capacity weight upon said beam.v

2. In a weighing apparatus, the combination of a pivoted weigh-beam, means for supporting an article to be weighed from said beam, means actuated by the swinging of said beam upon its pivotal mounting for indicating the weight, a rock-shaft a short distance above said beam, arms carried by said rock-shaft, a capacity weight pivotally mounted on said arms, being provided with an offset neck portion adapted to embrace said rock-shaft, and means for turning said rock-shaft for depositing the weight upon said beam.

In a weighing apparatus, the combination of -a pivoted weigh-beam, means for supporting an article to be weighed from said beam, means actuated `by the swinging of said beam upon its pivotal mounting for indicating the weight, a rock-shaft a short distance above said beam, arms carried by said rock-shaft, a capacity weight pivotally mounted on said arms, means for turning the rock-shaft for depositing the .weight upon said 'beamLandmeans actuated by the turning-ofsaid rock-shaft for giving a weight indication corresponding to the-weight so deposited upon the beam.

A4.v In a weighing apparatus, the combination of a pivoted weigh-beam, means for said rock-shaft, a capacity weight .pivotally g mounted on said arms, means Jfor turning the rock-shaft for depositing the weight upon said beam, a slidably-mounted lever pivotally connected with -one of said arms,

Vand means actuated by a stroke of said lever upon the turning of said rock-shaft for giving a weight indication corresponding to the weight so deposited upon the beam.

5. In a weighing apparatus, the combination of a pivoted weigh-beam, means for supporting an article to be weighed from said beam, an arm rising from said beam, a rack-bar pivotally mounted on said arm, means for balancing said rack-bar upon its pivot, a pinion with which said rack-bar meshes lightly from below, and means actuated by the rotation of said pinion for indieating a weight.

6. In a weighing apparatus, the combination of a pivoted weigh-beam, means for supporting an article to be weighed from said beam, an arm rising Jfrom said beam, a rack-bar pivotally mounted on said arm, means for balancing said rack-bar upon its pivot` a pinion adapted to mesh with said rack-bar, means for supporting said rackbar with its teeth barely in mesh with said pinion, means for adjusting said rack-bar supporting means relative to said pinion,

Vand means actuated by the rotation of said pinion for indicating a weight.

7. In a weighing apparatus, the combination of a pivoted weigh-beam, means for supporting an article to be weighed from said beam, an arm rising from said beam, a rack-bar pivotally mounted on said arm, means for balancing said rack-bar upon its pivot, 4a pinion with lwhich said rack-bar meshes lightly from below, means for adjusting said rack-bar vertically relative to said pinion, and means actuated by the rotation of said pinion for indicating a weight.

8. In a weighing apparatus, the combination of a pivoted weigh-beam, means for supporting an article to be weighed from said` beam, an arm rising from said beam, a rack-bar pivotally mounted on said arm and adjustable longitudinally relative thereto, a weight adjustably mounted on said rack-bar for holding it substantially balanced upon its pivot, and means actuated by said rack' bar for indicating a Weight.

9. ln a weighing apparatus, the combination or" aA pivoted Weighbeam,.means Yfor supporting'an article to be weighed Vfrom Y said beam an arml rising from said beam, a

rack-bar pivotally mounted on saidl arm, means for balancing said rack-bar upon/its pivot, `a4 pinion With which said rack-bar vmeshes from below7 means actuated by the rotation of said pinion for indicating a Weight, Vand means for substantially balancing said rack-bar relative to its support upon the beam.l ,1

10.*,In a Weighing apparatus, the combination of apivoted Weigh-beam, means for supporting 'an article to be weighed from' said beam, anarmy rising from said beam, amok-'bar pivotally mounted on sald arm,

means iforbalancing said rack-bar upon its` pivot7V a pinion With Which said rack-bar meshes from below,` means actuated by the rotation of said pinion for indicating a Weight, means for adjustlng said rack-bar verticallyrelative to said pinion, and means 

